Describe the polarity of the molecule below and predict the shape of the molecule by looking at its Lewis dot structure.
1 answer:
Answer:
Polar and bent
Explanation:
It looks like you are trying to find the polarity of H-O-H.
Its Lewis structure is shown in the first diagram below.
It has two lone pairs and two bonding pairs, so it is an AX₂E₂ molecule and its molecular shape is bent, as in the second diagram.
O is much more electronegative than H, so the O-H bond is highly polar. The O atom is at the negative end, and the H atom is at the positive end.
The centre of negative charge is on the O atom, and the centre of negative charge is halfway between the two H atoms, so the molecule has a net dipole pointing "up" in the picture.
Thus, H-O-H has polar bonds and is a polar molecule.
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Answer: The correct answer is option B.
Explanation: There are 7 elements in group VIII-A. They are Helium (He), Neon(Ne), Argon(Ar), Krypton (Kr), Xenon (Xe), Radon (Rn) and Ununoctium (Uuo). They are considered as a part of group 18.
Metals are shown in purple color in the periodic table. Metalloids as blue color and Non-metals are shown in green color.
Group VIII-A elements have fully filled orbitals and hence are most stable amongst all the elements in the periodic table. They are considered as least reactive elements and as they are categorized as non-metals. So, they are the least reactive non-metals.
Therefore, the correct option is B.
